Comments on the entropy of seismic electric signals under time reversal

Details Comments on the entropy of seismic electric signals under time reversal Comments on the entropy of seismic electric signals under time reversal

2006-11-16

arxiv.org/abs/cond-mat/0611437v1

Physics

Condensed Matter

Statistical Mechanics

4 pages including 3 figures

Scientific paper

We present recent data of electric signals detected at the Earth's surface, which confirm the earlier finding [Phys. Rev. E 73, 031114 (2006)] that the value of the entropy in natural time as well as its value under time reversal are smaller than that of the entropy of a ``uniform'' distribution. Furthermore, we show that the scale dependence of the fluctuations of the natural time itself under time reversal provides a useful tool for the discrimination of seismic electric signals (critical dynamics) from noises emitted from manmade sources as well as for the determination of the scaling exponent.

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